William bandel



MPI-:rias PHOTQMTHDGRAPHER. WASMINGYON. o C.

UNTTED STATES PATENT GEETCE.

WILLIAM RANDEL, OF TROY, NEW YORK.

IMPROVEMENT IN BUTTON-HOLE ATTACHMENTS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. l66`,8l0, dated August17,1875; application filed May 1,'1875.

To all whom it may concern Be it known that I, WILLIAM HANDEL, of Troy,county of Rensselaer, State of New York, have invented an lmprovedButton- Hole Attachment for Sewing-Machines, of which the following is aspecitication, reference being had to the accompanying drawings formingpart hereof.

My invention consists of the combination of the peculiar deviceshereinafter particularly described, constituting a feed-movement, andthe mechanism for actuating the saine, and the clamp attachment forfirmly holding the fabric operated upon, whereby a button-hole may bestitched by the sewing-machine.

Figure 1 is a plan view of my invention, showing its various parts. Fig.2 is a side view of the switch-lever. Fig. 3 is a similar View of thecloth-clamp. Fig. 4 is a plan of the same. Fig. 5 is a front endelevation of the same. Fig. 6 is a plan view of the oscillating plate.Fig. 7 is a similar view of the traveling feed-plate, carrying theratchet feedbar. Fig. 8 is a side elevation of the same. Fig. 9 is aside elevation of the small drivingrod; and Fig. l0 is a similar view ofthe eccentric clamp-lever.

B is the bed-plate, intended to be secured upon the bed-plate of asewing-machine, and is formed with the slotted shoulder a, in which themain driving-rod B has a bearing, which said driving-rod is given analternate advancing and receding motion by the needle-arm of themachine, with which it should be suitably connected. O is theoscillating plate, pivoted at its end e upon the bed-plate B, at b, andguided in its motion by a pin, p, fixed in the bed-plate B, working in acurved slot, s, formed in the plate O, as shown. B is the smalldriving-rod, pivoted at r upon the end of the main driving-rod R, andcarries the pin d on its forward end, as shown. fis a guide-plate,intended to be cast or otherwise made in the same piece with thebed-plate B, and is formed with the V-shaped slot c, as shown. l is acam-lever carrying the cam g, and is pivoted upon the guide-platef at i,as shown. G is a connecting-rod, pivoted adjustably to the camlever l,at c', as shown, and pivoted upon the plate O at a. W is thereciprocating feedwedge,`pivoted to the cam-lever l at w, as

shown, and has a bearing in the slotted shoulder b', xed in the plate O.D and D are feed-blocks, arranged to move in ways i0/ on the plate O,and provided with the leaf bowspring S, which operates to press themtogether, and having pivoted to them, respectively, looking in oppositedirections, the dogs P and P', which are provided with the leaf-.springs e', and which project below the plate O through the openings 0ando', as shown. F is the traveling feed-plate, arranged to slide inways It in the large opening ql in the plate O, and provided with theopening f', and having the ratchet feed-bar E, which is arranged to movein the channel m, formed in the under face of the plate O, directlyunder the dogs P and P', as shown. rlhe ratchet feed-bar E is formedWith a ratchet, n, at one side, near one end, extending laterally onlyabout halfway across the surface of the bar, and with a ratchet, n', atthe other side, near the other end, also extending laterally only abouthalf-way across the surface of the bar, so that each halt' of thesurface of the bar is formed with an alternate smooth and ratchet ortoothed surface, in line with the `jaws of the dogs P and P', as shown.The teeth of the ratchet n project against the jaw of the dog P, and theteeth of the ratchet a project against the jaw of the dog P', as shown.g g are transverse guide-bars, ixed on the plate F, as shown, and of alength sufficiently less than the Width of said plate to allow saidplate, with its ratchet feed-bar E, to be shifted in the ways handchannel in, by means of the switch-lever h', which is pivoted upon theplate O at i', and which engages, by means of a pin, t, in the long slotu in the plate F, and the notched slot u in the plate O, as shown, sothat the ratchet n may be adjusted under the dog P, and the feed-bar andguide-plate F caused to travel in one direction, or the ratchet fn beadjusted under the dog Pf, and the feed-bar and feed-plate be caused totravel in the opposite direction, the unadjusted dog in either caseresting upon the smooth surface of the bar E, as shown. G

is the cloth-clamp, hinged to feed-plate at Fcl-p and formed with theopening l', and provided with the spring-jaws j fixed on its under side,as shown, and operating to hold the cloth in which the button-hole is tobe stitched, by

means of the eccentric lever m', which is pivoted at Ic in the post q,which is fixed in the feed-plate F, and eXtends upward through theopening c in the clamp G, as shown. H is a leaf-spring fixed at one endupon the plate O at fv', and having upon its other end the arm k', whichpasses under the clamp Gr, as shown, and which is provided with theslotted opening rv, through which the needle passes in making thestitch, operating to hold smooth and taut the portion of the fabric inwhich the stitch is made,-While the feed-plate and cloth-clamp aretraveling.

The operation of my mechanism is as follows: A reciprocating motionbeing given to the main driving-rod R, the pin d 011 the forward end ofthe small driving-rod R' is forced first against one side and thenagainst the other of the cam g on the cam-lever l, thus causing the saidcam-levers to rock or oscillate. The plate O by the connecting-rod C isoscillated so that the proper length of stitch is made upon the edge ofone side of the slit forming the button-hole, the feed-plate F carryingthe cloth under the clamp G, being carried along by the feed-bar, sothat the edgeon one side of the slit is stitched along its Whole lengthby the operation of the reciprocating feed- Wedge, which pushes thefeed-blocks D and D' carrying thedogs P and P' apart, the ratchet nbeing adjusted under the dog P.

When one side of the slit forming the button-hole is stitched, thefeed-plate F, with the feed-bar, are shifted in the Ways h by meansofthe switch-levers h', so that the-ratchet n' is brought under the dog P'when the direcl tion of travel ofthe feed-plate is obviously reversedand the other side of the slit forming spectively, the spring S, thereciprocating' feed-Wedge W, and the switch h', as and for purposedescribed. p

2. The combination, with the plate O, pivloted at b, and the feeding andclamping mechanism, of the pivoted connecting-rod C, the cam-lever l,the reciprocating driving-rod R', provided with the pin d, cam g, andthe plate f, as described, and for the purpose specified.

3. The' combination, with plate 0, pivoted at b, block D D', dogs P P',springs S and e e', and the feed-bar E, of the pivoted connecting-rod C,cam-lever l, feed-Wedge W, andre- -ciprocating driving-rod R', asdescribed, and" for the purpose specified.

4. The combination of the feed-plate F, the vfeed-bar E with itsratchets n and n', the dogs P and P', the blocksD and D', the spring S,

the reciprocating feed-wedge W, the switchv h', the plate O pivoted atb, the connecting- 'rod C, thecam-lever l, the reciprocating driving-rodR', pivoted with the pin d, thev cam g,

the plate-f, the hinged clamp C,jawsjj, the spring H, and eccentriclever m', as described.

WILLIAM lRANDEL.

Witnesses FRANK H.' BRYAN, B. lifAcGrRiiefoR.v

